George diffendehfee



G. DIFFENDERFER.

Domestic Oven.

Patented July 30, 1867.

MPEIERS, PHDTO-LITHOGRAPHER. WASHINGYON. D, c.

guitar. gutter; ijgatrut @ffita- GEORGE DIFFENDERFER, OF LEWISB'URG,PENNSYLVANIA.

Letters Patent No. 67,172, dated Ja -F 1 30,1867.

PORTABLE OVEN FOR DRYING FRUITS.

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TO WHOM IT MAY CONCERN:

Be it known that I, GEORGE DIFFENDERFER, of Lewisburg, in the county ofUnion, State of Pennsylvania, have invented a Portable Fruit-Dryer; andI do hereby declare the following to be a full, clear, and exactdescription thereof, reference being had to the accompanyingdrawings,making part of this specification, in which---- 7 Figure 1 is a sideelevation of a common cooking-stove, having my fruit-dryer applied toit;' also showing a section of stove pipe, and the fruit-dryer whenremoved from the stove;

Figure 2 is a vertical transverse section through the centre of thefruit-dryer.

Figure 3 is a vertical longitudinal section through the centre of thefruit-dryer.

Similar letters of reference indicate corresponding parts in the threefigures. v

This invention relates to a new and improved fruit-dryer, which is soconstructed that it is adapted for use upon any ordinary cooking-stovein place of one of the sections of stove pipe, so that when it is notdesired to use the dryer, it can be readily removed from the stove, anda section of stove pipe applied in its place, as will be hereinafterdescribed. I

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation. I

In the accompanying drawings, fig. 1, I have represented my improveddryer applied to a well-known form of cooking-stove, A, so as to receivethrough it the heated products of combustion as they pass oil to thechimney, .and thereby utilize the escaping heat for drying purposes; Thedryer consists of a rectangular or other shaped box, D, havingdouble-wall sides, double-wall-bottom and top, with hinged doors D Dapplied to its ends, as shown in figs. 2 and-3. These inner and outerwalls form a flue or space for the circulation of the heated products ofcombustion around the interior drying-chamber, and their ends aresecured to rectangular frames a a by means of the bolts e e. whichframes not only serve to close the ends of the smoke-space between thesaid walls, bnt'they also stiffen and strengthen the box, and admit ofthe use of thin sheet iron for the walls. The doors D D are hinged onone side to said frames, and latched on'the other side thereto In themiddle of the length of the drying-box I introduce a cast-iron frame,01, between the inner and outer walls, and secure it in place by passingthe bolts 2 through it. This'frarne is designed to serve as a means ofstrengthening the -box between its ends and preventing its sides fromcollapsing, and it is also used to format division for the smokepassage,and a means of securing the smoke-deflectorsff in their places. Beinglocated in line with the short -pipes or sleeves B B, this frame dserves as a support for sustaining the weight of the articles put intothe dryer upon the stove. The deflectors ff are employed to preventtheheated products of combustion from taking the shortest course fromthe lower pipe B to the upper escape pipe B, by deflecting theseproducts toward the ends of the dryers, and thus causing the heat to beuniformly distributed throughout this dryer. The pipes B B are shortcollars, which are adapted for fitting over the collar on the stove A,and for receiving and entering the stove pipe when the lowersectiou ofthe stove pipe is removed. This dryer thus. takes the place of thesection 0 of vpipe when the section is removed. When the dryer is notrequired, it can be quickly removed, and the section 0 applied in itsplace. Upon the inside of this dryer, and secured to the inner wallsthereof, are ledges gg, which may be constructed of angular metal, andso applied as to form rests for the removable drying-boards or pans h,and also guards for protecting the inner walls from wear, by frequentlyremoving and replacing the said pans.

When the stove-pipe section is removed, and the dryer, which I havedescribed, applied in its place, as shown in fig. 1, the heated productsof combustion will circulate between the walls enclosing thedrying-chamber, and pass ofi into the smoke pipe above it. The fruit tobe dried is spread upon the pans 71, and these pans introduced. into thedrying-chamber one above the other. The doors of the dryer arcthenclosed, and the temperature in the drying-chamber regulated by theadmission of air through the valvc-openings'c c which are made throughthe doors, as shown in the drawings.

I am aware that stoves have been constructed with elevated ovens, aroundwhich the heated products of combustion pass in their escape to thechimney, and therefore I do not claim broadly the use of elevated ovens.Such contrivances are designed as permanent fixtures for cooking-stoves,for baking and keeping articles warm,

and would not answer my purpose. The improved dryer which I havedescribed is designed to be temporarily applied to a stove in place ofone of the stove-pipe sections to he used during the fruit-dryingseason, and then removed, and the section of pipe substituted in itsstead, thus rendering a separate furnace and fire for drying fruitunnecessary, by utilizing the heat which escapes from the stove whilecooking. My dryer differs from elevated ovens in many importantparticulars, and does not require, in its application to a stove, anychange in the construction of the latter.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is'

A double-wall portable fruit-dryer, which is adapted for application toa stove in place of a portion of the stove pipe, and which isconstructed and strengthened substantially as described and shown. I

. GEO. DIFFENDERFER.

Witnesses: t t 7 PAUL GEDDES, O. D. Cmnm.

